Question

Galera boa noite, ME AJUDEM POR FAVOR!!!

1) Resolver as equações abaixo:

a) 10 x + 12 = 15 x + 8
b) 13 x - 23 - 45 = -7 x + 12
c) x + 2 x - 1 - 3 = x
d) - x - 5 + 4 x = -7 x + 6 x + 15
e) 2(5 x - 3) - 32(3 - x) - 3(12 x - 4) = 96
f) 5(x + 1) + 6(x + 2) = 9(x + 3)

OBS: COM CÁLCULOS POR FAVOR!
GRATA! :)

Answer 1

Ola =)

a) 10 x + 12 = 15 x + 8
10x-15x=8-12
-5x=-4
x=-4/-5
x=4/5


b) 13 x - 23 - 45 = -7 x + 12
13x+7x=12+23+45
20x=80
x=80/20
x=4


c) x + 2 x - 1 - 3 = x
x+2x-x=1+3
2x=4
x=4/2
x=2


d) - x - 5 + 4 x = -7 x + 6 x + 15
-x+4x+7x-6x=15+5
4x=20
x=5

e) 2(5 x - 3) - 32(3 - x) - 3(12 x - 4) = 96
10x-6-96+32x-32x+12=96
10x+32x-32x=96+96-12+6
10x=186
x=186/10
x=93/5

f) 5(x + 1) + 6(x + 2) = 9(x + 3)
5x+5+6x+12=9x+27
5x+6x-9x=27-12-5
2x=10
x=10/2
x=5

Bons Estudos =)